MGS MOC Release No. MOC2-346, 30 April 2003 This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) picture obtained in April 2003 shows eroded layered rock outcrops near the southwest rim of Juventae Chasma in the southern hemisphere. This area is near 4.8S, 63.7W. Layers such as these record some fraction of the geologic history of Mars; however, that history cannot really be known from pictures alone. The erosional pattern of these layers suggests that they are sedimentary rocks. The area shown is about 3 km (1.9 mi) wide. Sunlight illuminates the scene from the upper left.